Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a mild 60.6°F (15.9°C) to an agreeable 72.3°F (22.4°C). In the month of May, an average of 51.3°F (10.7°C) marks the low-temperature.Humidity
In May, the average relative humidity in Rosslyn Farms, Pennsylvania, is 77%.Rainfall
In Rosslyn Farms, Pennsylvania, in May, during 15.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Rosslyn Farms, during the entire year, the rain falls for 132.6 days and collects up to 11.5" (292mm) of precipitation.Snowfall
May through October are months without snowfall in Rosslyn Farms.Daylight
The average length of the day in May is 14h and 26min.On the first day of May, sunrise is at 6:18 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:44 pm EDT.
Sunshine
In Rosslyn Farms, the average sunshine in May is 8.9h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 5 during May translates into the following directions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What are the temperatures in Rosslyn Farms in May?
What is the average humidity in May in Rosslyn Farms?
How much does it rain in Rosslyn Farms in May?
When it does not snow in Rosslyn Farms?
Does it snow in Rosslyn Farms in May?
What is the average length of the day in May in Rosslyn Farms?
What time are sunrise and sunset in May in Rosslyn Farms?
How many hours of sunshine does Rosslyn Farms have in May?
How high is the UV index in May in Rosslyn Farms?
Average temperature in May
Rosslyn Farms, PA
- Average high temperature in May: 72.3°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 51.3°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Rosslyn Farms, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Rosslyn Farms, PA
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in May
Rosslyn Farms, PA
- Average humidity in May: 77%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in May
Rosslyn Farms, PA
- Average rainfall in May: 1.22"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in May
Rosslyn Farms, PA
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in May
Rosslyn Farms, PA
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Rosslyn Farms, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rosslyn Farms, PA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
Rosslyn Farms, PA
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in May
Rosslyn Farms, PA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Rosslyn Farms, PA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Rosslyn Farms, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Rosslyn Farms, Pennsylvania, USA
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